#app {
  width: 600px;
  margin: 10px auto;
}

.tb {
  border-collapse: collapse;
  width: 100%;
}

.tb th {
  background-color: #0094ff;
  color: white;
}

.tb td,
.tb th {
  padding: 5px;
  border: 1px solid black;
  text-align: center;
}

.add {
  padding: 5px;
  border: 1px solid black;
  margin-bottom: 10px;
}

.model {
  position: relative;
  width: 300px;
  height: 200px;
  border: 1px solid #333;
  margin: 200px auto;
  background: pink;
  border-radius: 10px;
}
span {
  position: absolute;
  display: inline-block;
  height: 30px;
  width: 60px;
  color: black;
  right: 0px;
  top: 10px;
}
.btn1 {
  position: absolute;
  width: 40px;
  height: 30px;
  left: 30px;
  bottom: 30px;
}
.btn2 {
  position: absolute;
  width: 40px;
  height: 30px;
  right: 30px;
  bottom: 30px;
}
